Fixes for runtest

- No need to include cts/CtsBuild.mk, because that is included by the
  core build system.

- Include the tradefed-prebuilt.jar on the classpath when running
  host side tests.

- Update some of test_defs that have changed. Remove suites that
  have been deleted.

Change-Id: Ie2845db7f209ad4ccb881d2ad47b9415c9f518a4

testrunner/runtest.py

@@ -234,8 +234,6 @@ class TestRunner(object):
     self._DoFullBuild(tests)
 
     target_set = []
-    if self._IsCtsTests(tests):
-      target_set.append("cts/CtsBuild.mk")
 
     extra_args_set = []
     for test_suite in tests: